Higashimatsuyama, Japan

Risaburo Watanabe

This inventor holds 2 USPTO granted patents. Top assignee: Robert Bosch. Active years: 1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Risaburo Watanabe. Retrieved from https://idiyas.com/inventor/risaburo-watanabe

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 23(Granted Patents)


Company Filing History:


Years Active: 1981

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2 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Risaburo Watanabe

Introduction

Risaburo Watanabe is a notable inventor based in Higashimatsuyama, Japan. He has made significant contributions to the field of engineering, particularly in the development of vane compressors. With a total of 2 patents to his name, Watanabe's work showcases his expertise and innovative spirit.

Latest Patents

Watanabe's latest patents include a unique vane compressor design. This vane compressor features a hollow stator and a rotor that rotates about an axis. The rotor is equipped with multiple throughgoing passages that extend radially outward. Each passage accommodates a vane, which has an outer end face directed towards the stator's inner circumference and an inner end face directed away from it. The vanes can shift radially within their passages. A pressure medium is supplied to the inner end faces of the vanes, urging them outward for engagement with the stator's inner circumference. As the rotor rotates, the vanes experience an additional pressure from centrifugal force, which further presses them against the stator. The combined pressures can lead to frictional losses, and Watanabe's design includes an arrangement to reduce this cumulative pressure, thereby eliminating undesired frictional losses.

Another of his patents is for a rotary fluid pressure biased vane compressor with pressure release means. This design shares similar features with the previous patent, emphasizing the importance of managing pressure to enhance efficiency and reduce frictional losses.

Career Highlights

Watanabe is currently associated with Robert Bosch, a leading global engineering and technology company. His work at Bosch allows him to apply his innovative ideas in a collaborative environment, contributing to advancements in compressor technology.

Collaborations

Watanabe has worked alongside talented colleagues, including Naoki Hashizume and Masami Ohtani. Their collaborative efforts have likely fostered an environment of creativity and innovation, leading to the development of cutting-edge technologies.

Conclusion

Risaburo Watanabe's contributions to the field of engineering, particularly through his innovative vane compressor designs, highlight his role as a significant inventor. His patents reflect a commitment to improving efficiency and reducing frictional losses in mechanical systems. Watanabe's work continues to influence the industry and inspire future innovations.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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